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Technical Data Sheet
PartsTable / COMPONENT / MS21241-12C016
MS21241-12C016 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER, corner_shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER, flange_width: 0.0575 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN, overall_length: 0.5475 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, hardness_rating: 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OUTER LAYER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-006-4815, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MS21241-12C016
NSN: 3120-00-006-4815
FSC: 3120
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER
corner_shapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
flange_width0.0575 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN
overall_length0.5475 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
hardness_rating27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OUTER LAYER
special_featuresPLASTIC/POLYTETRAFLUOROETHYLENE/ LINER BONDED TO LEFT END SURFACE OF FLANGE
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter0.7505 INCHES MINIMUM AND 0.7515 INCHES MAXIMUM IN
body_outside_diameter0.9388 INCHES MINIMUM AND 0.9393 INCHES MAXIMUM IN
flange_outside_diameter1.4800 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
material_document_and_classificationAMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AISI 410 ASSN STD 2ND MATERIAL RESPONSE OR AISI 416 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER
NSN3120-00-006-4815
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MS21241-12C016 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE OUTSIDE DIAMETER: 1.4800 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 0.7505 INCHES MINIMUM AND 0.7515 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.9388 INCHES MINIMUM AND 0.9393 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.0575 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN
•
SURFACE FINISH: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
•
CORNER SHAPE: SQUARE INSIDE LEFT CORNER
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE OUTSIDE DIAMETER1.4800 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.7505 INCHES MINIMUM AND 0.7515 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.9388 INCHES MINIMUM AND 0.9393 INCHES MAXIMUM IN
FLANGE WIDTH0.0575 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPEUNDERCUT LEFT FLANGE BODY CORNER
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
103-2012-016Interchangeable
Same NIIN cross-reference
interchangeable
AS81934Interchangeable
Same NIIN cross-reference
interchangeable
ATLF12SS16Interchangeable
Same NIIN cross-reference
interchangeable
KDJ12C016-241Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21241-12C016?
MS21241-12C016 is a BEARING,SLEEVE.
What parts can replace MS21241-12C016?
There are 4 known substitutes for MS21241-12C016: 103-2012-016, AS81934, ATLF12SS16 and 1 more. Substitute compatibility should be verified for your specific system.
Is MS21241-12C016 still available?
MS21241-12C016 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026